帮忙解释几个题目吧~~~谢谢啦！！！！

superwangzhen · 发表于 2010-9-13 16:39:29

1.404. In the 1980’s the rate of increase of the minority population of the United States was nearly twice as fast as the 1970’s.
(A) twice as fast as
(B) twice as fast as it was in
(C) twice what it was in
(D) two times faster than that of（C）
(E) two times greater than
B为什么不对啊？

1.441. It is as difficult to prevent crimes against property as those that are against a person.
(A) those that are against a
(B) those against a
(C) it is against a
(D) preventing those against a（E）
(E) it is to prevent those against a
这里的it is as difficult 的it是指代什么吗？还是做什么成分啊。。。
还有比较句的省略到底怎么回事啊？怎么看省略的对不对啊？

1.413. In the mid-1920’s the Hawthorne Works of the Western Electric Company was the scene of an intensive series of experiments that would investigate changes in working conditions as to their effects on workers’ performance.
(A) that would investigate changes in working conditions as to their effects on workers’ performance
(B) investigating the effects that changes in working conditions would have on workers’ performance
(C) for investigating what are the effects in workers’ performance that changes in working conditions would cause
(D) that investigated changes in working conditions’ effects on workers’ performance（B）
(E) to investigate what the effects changes in working conditions would have on workers’ performance
这题的做题思路是什么啊？我基本不会做这个。。。。

谢谢各位大侠啦。。。。

judydongxueni · 发表于 2010-9-13 20:33:49

第一道题目，rate不能用fast来修饰

帮忙解释几个题目吧~~~谢谢啦！！！！

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